crash while trying to add way to relation

[kennykb]

I was trying to add a way to an existing relation. The relation was huge, so I downloaded the relation and all members (using Download Object), and then the local area of the way. In the 'Edit relation' dialog, I got a crash while trying to set up to add ways to the relation.

Stack trace was:

ERROR: java.lang.NullPointerException
java.lang.NullPointerException

at org.openstreetmap.josm.gui.dialogs.relation.sort.WayConnectionTypeCalculator.makeLoopIfNeeded(WayConnectionTypeCalculator.java:116)
at org.openstreetmap.josm.gui.dialogs.relation.sort.WayConnectionTypeCalculator.updateLinks(WayConnectionTypeCalculator.java:100)
at org.openstreetmap.josm.gui.dialogs.relation.MemberTableModel.getWayConnection(MemberTableModel.java:777)
at org.openstreetmap.josm.gui.dialogs.relation.MemberTable$ZoomToGapAction.getConnectionType(MemberTable.java:203)
at org.openstreetmap.josm.gui.dialogs.relation.MemberTable$ZoomToGapAction.hasGap(MemberTable.java:210)
at org.openstreetmap.josm.gui.dialogs.relation.MemberTable$ZoomToGapAction.updateEnabledState(MemberTable.java:231)
at org.openstreetmap.josm.gui.dialogs.relation.MemberTable$ZoomToGapAction.valueChanged(MemberTable.java:239)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:184)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:164)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:211)
at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:405)
at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:415)
at javax.swing.DefaultListSelectionModel.addSelectionInterval(DefaultListSelectionModel.java:518)
at org.openstreetmap.josm.gui.dialogs.relation.MemberTableModel.addMembersAtIndex(MemberTableModel.java:456)
at org.openstreetmap.josm.gui.dialogs.relation.MemberTableModel.addMembersAtEnd(MemberTableModel.java:492)
at org.openstreetmap.josm.gui.dialogs.relation.actions.AddSelectedAtEndAction.actionPerformed(AddSelectedAtEndAction.java:42)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
at java.awt.Component.processMouseEvent(Component.java:6535)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6300)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4891)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at org.GNOME.Accessibility.AtkWrapper$5.dispatchEvent(AtkWrapper.java:697)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

INFO: GET https://josm.openstreetmap.de/wiki/TestedVersion?format=txt -> 200
INFO: Registered toolbar action bug overwritten: org.openstreetmap.josm.actions.ReportBugAction gets org.openstreetmap.josm.actions.ReportBugAction
INFO: Opening URL: https://josm.openstreetmap.de/newticket
Xlib: extension "XInputExtension" missing on display ":0.0".
INFO: GET ​https://api.openstreetmap.org/api/0.6/user/details (get number of unread messages) -> 200 (532 B)